Polymer-based thin films with embedded metallic nanoparticles: tuning electrical properties for sensors devices

• Grant number: 25/13429-2
• Support Opportunities: Scholarships in Brazil - Master
• Start date: August 01, 2025
• End date: July 31, 2027
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Varlei Rodrigues
• Grantee: Eduardo Fernandes Lopes Fabbris
• Host Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated research grant: 24/00998-6 - Center for Research and Innovation on Smart and Quantum Materials (CRISQuaM), AP.CEPID

Abstract

This project investigates the electrical properties of polymer thin films containing metallic nanoparticles with controlled implantation depth, targeting applications in sensors and memristors. We combine layer-by-layer (LbL) polymer assembly with gas-phase nanoparticle deposition to create hybrid materials with tunable architectures. This methodology enables precise control over nanoparticle size, composition, and depth distribution within the polymer matrix. Key objectives include: (1) structural characterization of nanoparticle dispersion using electron microscopy, (2) electrical measurements to analyze charge transport mechanisms, and (3) evaluation of memristive behavior and sensing potential. The research focuses on nanoparticle-polymer interactions, particularly how implantation depth influences electrical response. Expected outcomes include optimized fabrication protocols for resistive switching devices and fundamental advances in understanding metal-polymer nanocomposites. Bridging materials science and nanoelectronics, this work may contribute to developing flexible sensors and bioinspired adaptive electronic systems. (AU)